2256698897 has 2 divisors, whose sum is σ = 2256698898. Its totient is φ = 2256698896.

The previous prime is 2256698789. The next prime is 2256698923. The reversal of 2256698897 is 7988966522.

Together with previous prime (2256698789) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2111953936 + 144744961 = 45956^2 + 12031^2 .

It is a cyclic number.

It is not a de Polignac number, because 2256698897 - 2⁸ = 2256698641 is a prime.

It is not a weakly prime, because it can be changed into another prime (2256697897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128349448 + 1128349449.

It is an arithmetic number, because the mean of its divisors is an integer number (1128349449).

Almost surely, 2^2256698897 is an apocalyptic number.

It is an amenable number.

2256698897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256698897 is an equidigital number, since it uses as much as digits as its factorization.

2256698897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26127360, while the sum is 62.

The square root of 2256698897 is about 47504.7249965727. The cubic root of 2256698897 is about 1311.6698587535.

The spelling of 2256698897 in words is "two billion, two hundred fifty-six million, six hundred ninety-eight thousand, eight hundred ninety-seven".